dirstate: drop unused condition in `from_p2`...
dirstate: drop unused condition in `from_p2`
This conditional was added (by me) tentatively because "it seemed more
correct", but it is not used anywhere yet, and it is missing from the C and the
Rust implementation. So it seems more consistent to drop it for now.
This effectively backout
f94cc63df859c
Differential Revision:
https://phab.mercurial-scm.org/D11510